CN203499555U - Cut-through type reverse circulation impactor - Google Patents
Cut-through type reverse circulation impactor Download PDFInfo
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- CN203499555U CN203499555U CN201320619462.2U CN201320619462U CN203499555U CN 203499555 U CN203499555 U CN 203499555U CN 201320619462 U CN201320619462 U CN 201320619462U CN 203499555 U CN203499555 U CN 203499555U
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Abstract
The utility model discloses a cut-through type reverse circulation impactor, and relates to the technical field of impact tools driven by fluid pressure. The cut-through type reverse circulation impactor comprises a double-wall drill pipe connector, an air cylinder, an air distributing seat, a check valve, a spring, a central rock sample tube, an outer sleeve, a piston, a guide sleeve, a retaining ring, a front connector and a drill bit, and further comprises a supporting seat, an air guide hood and an impurity filter screen. The air distributing seat, the check valve and the supporting seat are mounted on the inner side of the upper end of the air cylinder in sequence, the supporting seat is mounted on the central rock sample tube in a sleeved mode, the impurity filter screen is arranged at an air distributing hole position of the air distributing seat, a first air distributing hole and a second air distributing hole are formed in the lower end of the part, matched with the outer sleeve, of the air cylinder, the first air distributing hole and the second air distributing hole are ventilative in the radial direction, inclined air holes are further formed in the upper end of the matched part of the air cylinder, and the air guide hood is connected on the front connector and forms a negative pressure zone together with the front connector and the drill bit. The cut-through type reverse circulation impactor is simple in structure, accurate in rock drilling and small in air loss, improves impact power, and can be free of influences of collapse of hole walls, sampling can be carried out constantly, drilling efficiency is improved greatly, and pollution on the environment is reduced.
Description
Technical field
The utility model relates to the percussion tool technical field of fluid pressure actuated.
Background technology
Pneumatic hole impinger is widely used in the rock sample in early stage of a series of object of construction production such as ore detection, underground collection of rock sample, construction work, water power, harbour, speedway and surveys; from China, apply at present pneumatic hole impinger drilling method; now generally mostly being direct circulation creeps into; the direct deslagging in aperture; dust flies upward; serious to operating personnel and equipment harm, be unfavorable for environmental protection.Because the annular area between boring and drilling rod is large, in drilling process, just formed, when although air quantity can meet the normal wind supply quantity of down-the-hole air hammer, and can not meet the requirement of returning wind speed on annular area deslagging, thereby cause the deslagging ability of boring low, at the bottom of hole, talus deposit is serious, drilling efficiency reduces, bit body serious wear, creep into more difficult, in addition the high velocity air returning on annular area, landwaste washes away hole wall, be easy to occur hole wall collapse, cause the generation of drilling accident, original drilling method cannot sample constantly, cannot accurately judge strata condition, cannot meet mineral prospecting uses, dirt slag blows out loss everywhere behind hole simultaneously, contaminated environment, affect Health Status For Workers Exposed.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of through reverse circulation impactor, simple in structure, bore that ichor is true, air-loss is little, has improved ballistic work, can not be subject to the impact of hole wall collapse, can sample constantly, effectively improve drilling efficiency, reduce the pollution to environment.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of through reverse circulation impactor, comprise double-wall drill pipe joint, cylinder, distribution seat, non retern valve, spring, center rock sample pipe, outer tube, piston, fairlead, retaining ring, front connector and bore bit, also comprise supporting seat, kuppe and foreign material screen pack, inner side, upper end at cylinder is provided with distribution seat successively, non retern valve and supporting seat, spring is between non retern valve and supporting seat and be sleeved on supporting seat, supporting seat is sleeved on the rock sample pipe of center, described foreign material screen pack is located at the air distribution hole place on distribution seat, and fix by the back-up ring of being located in cylinder, the inner side, upper end of cylinder is connected with the lower end of double-wall drill pipe joint, the lower end of cylinder penetrates in the chamber of outer tube and coordinates with outer tube, the periphery of cylinder is provided with annular groove and forms air flue with together with annular groove on outer sleeve inner wall, on cylinder, be provided with the first air distribution hole and second air distribution hole of radially ventilation with the lower end of outer tube mating part, upper end at described cylinder mating part is also provided with oblique pore, described kuppe is connected to and in front connector and with front connector, forms negative pressuren zone together with bore bit, described outer tube axial limiting is between kuppe and the flange of cylinder upper end.
The first air distribution hole, the second air distribution hole and oblique pore are more than 2, and uniform ringwise on cylinder.
The periphery of described piston and cylinder mating part is provided with two groups of annular grooves, corresponding with the first air distribution hole and the second air distribution hole on cylinder, forms air flue.
Supporting seat and center rock sample pipe are sealed and matched by the second sealing ring; The upper end of described cylinder and outer tube are tightly connected by the first sealing ring; Between described distribution seat and cylinder, be all sealed and matched between the rock sample pipe of distribution Zuo Yu center.
The inner side of described non retern valve, cylinder and supporting seat form the first air chamber, and the lower end of described cylinder, the outside of piston and outer tube inner side form the second air chamber, and the upper end of described piston, fairlead and outer tube inner side form the 3rd air chamber; The upper end of described fairlead inner side, piston lower end and front connector forms the 4th air chamber, and is communicated with described negative pressuren zone.
The beneficial effect that adopts technique scheme to produce is: because the utility model has increased cylinder length, two place's gas distribution channels have been set up, increased piston distribution area, increased ballistic work, making to calm the anger, it is more smooth and easy to flow, and has reduced the loss of calming the anger, and simplifies the structure, improved ballistic work, use cost is low; In addition on the one hand, bore bit afterbody of the present utility model bit shank pipe useless, adopts the distribution simultaneously of center rock sample pipe, has improved bore bit afterbody intensity, improves service life of the bits, solves real time sample problem in mineral prospecting, and the technical barrier in special operation condition.The utility model has been cancelled the gas-distribution pipe of bore bit, adopts the distribution simultaneously of center rock sample pipe, in front connector place, has set up kuppe, by coordinating with the helical groove of arranging on piston, in bore bit bottom, forms negative pressuren zone, makes impactor form anti-periodic duty.The utility model is simple in structure, brill ichor is true, air-loss is little, has improved ballistic work, can not be subject to the impact of hole wall collapse, can sample constantly, has effectively improved drilling efficiency, reduces the pollution to environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Mark in figure: 1, cylinder; 2, outer tube; 3, distribution seat; 4, non retern valve; 5, spring; 6, supporting seat; 7, center rock sample pipe; 8, the first air distribution hole; 9, piston; 10, fairlead; 11, front connector; 12, kuppe; 13, retaining ring; 14, bore bit; 15, foreign material screen pack; 16, back-up ring; 17, double-wall drill pipe joint; 18, the first sealing ring; 19, the 3rd air chamber; 20, the 4th air chamber; 21, the second air chamber; 22, oblique pore; 23, the second sealing ring; 24, the second air distribution hole; 25, negative pressuren zone; 26, the first air chamber.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises double-wall drill pipe joint 17, cylinder 1, distribution seat 3, non retern valve 4, spring 5, center rock sample pipe 7, outer tube 2, piston 9, fairlead 10, retaining ring 13, front connector 11 and bore bit 14, also comprise supporting seat 6, kuppe 12 and foreign material screen pack 15, inner side, upper end at cylinder 1 is provided with distribution seat 3 successively, non retern valve 4 and supporting seat 6, spring is between non retern valve 4 and supporting seat 6 and be sleeved on supporting seat 6, supporting seat 6 is sleeved on center rock sample pipe 7, described foreign material screen pack 15 is located at the air distribution hole place on distribution seat 3, and fixing by the back-up ring 16 of being located in cylinder 1, the inner side, upper end of cylinder 1 is connected with the lower end of double-wall drill pipe joint 17, the lower end of cylinder 1 penetrates in the chamber of outer tube 2 and coordinates with outer tube 2, the periphery of cylinder 1 is provided with annular groove and forms air flue with together with annular groove on outer tube 2 inwalls, on cylinder 1, be provided with the first air distribution hole 8 and second air distribution hole 24 of radially ventilation with the lower end of outer tube 2 mating parts, in the upper end of described cylinder 1 mating part, be also provided with oblique pore 22, described kuppe 12 is connected to and in front connector 11 and with front connector 11, forms negative pressuren zone 25 together with bore bit 14, described outer tube 2 axial limitings are between kuppe 12 and the flange of cylinder 1 upper end.
The first air distribution hole 8, the second air distribution hole 24 and oblique pore 22 are more than 2, and uniform ringwise on cylinder 1, described piston 9 is provided with two groups of annular grooves with the periphery of cylinder 1 mating part, corresponding with the first air distribution hole 8 and the second air distribution hole 24 on cylinder 1, form air flue, the distribution area that has increased piston, has increased ballistic work, and making to calm the anger, it is more smooth and easy to flow, reduced the loss of calming the anger, simplify the structure, improved ballistic work, use cost is low.
Supporting seat 6 is sealed and matched by the second sealing ring 23 with center rock sample pipe 7; The upper end of described cylinder 1 and outer tube 2 are tightly connected by the first sealing ring 18; Between described distribution seat 3 and cylinder 1, be all sealed and matched between distribution seat 3 and center rock sample pipe 7, can prevent Leakage Gas, reduce air pressure loss, improve ballistic work.
The inner side of described non retern valve 4, cylinder 1 and supporting seat 6 form the first air chamber 26, and the outside of the lower end of described cylinder 1, piston 9 and outer tube 2 inner sides form the second air chamber 21, and the upper end of described piston 9, fairlead 10 and outer tube 2 inner sides form the 3rd air chamber 19; The upper end of described fairlead 10 inner sides, piston 9 lower ends and front connector 11 forms the 4th air chamber 20, and is communicated with described negative pressuren zone 25, and described negative pressuren zone 25 is communicated with atmosphere.
Inside, lower end, lower end that the upper end of described piston 9 is slidably arranged in cylinder 1 are slidably arranged in fairlead 10, described piston 9 is provided with two groups of annular grooves with the mating part of cylinder 1, coordinates formation air flue respectively with two group of first air distribution hole 8 arranging on cylinder 1 and the second air distribution hole 24.Piston 9 and outer tube 2 mating parts, offer a plurality of helical grooves on its cylindrical, in distribution, air-flow is in groove rotational flow, is engaged in formation negative pressuren zone at the bottom of hole with kuppe 12 and bore bit 14; Cylinder 1 adopts long cylinder design, is provided with respectively the first air distribution hole 8 and the second air distribution hole 24, has increased the distribution area of piston 9; Described distribution seat 3, non retern valve 4, supporting seat 6 and foreign material screen pack 15 are arranged on the inside, upper end of cylinder 1, have shortened impactor overall length; Described center rock sample pipe 7 is communicated with double-wall drill pipe joint 17 through distribution seat 3, non retern valve 4, supporting seat 6, piston 9, fairlead 10, the other end and bore bit 14 are communicated with, thereby formed by bore bit 14, start to finish whole perforation to double-wall drill pipe joint 17, cancelled the gas-distribution pipe of bore bit 14,7 distributions simultaneously of employing center rock sample pipe, front connector 11 places have set up kuppe 12, by with piston 9 on the helicla flute arranged be engaged in formation negative pressuren zone at the bottom of hole, make impactor form anti-periodic duty.
Operating principle of the present utility model is as follows: gases at high pressure enter distribution seat 3 along the interlayer pore of double-wall drill pipe joint 17, push non retern valve 4 open, enter the first air chamber 26, through the outer wall of cylinder 1 and the air flue between outer tube 2, air drain on piston 9, in the 3rd air chamber 19 expansions, promoting piston 9 moves upward, when piston 9 is separated with fairlead 10, the gas of the 3rd air chamber 19 enters the 4th air chamber 20 and blows out impactor, gas pressure in the second air chamber 21 promotes piston return subsequently, again with fairlead 10 sealings, so circulation, reach impact effect, and dirt slag is from bore bit 14, center rock sample pipe 7, the endoporus of distribution seat 3 and double-wall drill pipe joint 17 is discharged outside impactor successively.
Because the utility model has increased cylinder 1 length, set up two place's gas distribution channels, increased piston 9 distribution areas, increased ballistic work, make to calm the anger mobile more smooth and easy, reduced the loss of calming the anger, simplify the structure, improved ballistic work, use cost is low; In addition on the one hand, bore bit 14 afterbody of the present utility model bit shank pipe useless, adopts 7 distributions simultaneously of center rock sample pipe, has improved bore bit afterbody intensity, improves 14 application lifes of bore bit, solves real time sample problem in mineral prospecting, and the technical barrier in special operation condition.The utility model has been cancelled the gas-distribution pipe of bore bit 14, adopts 7 distributions simultaneously of center rock sample pipe, and in front connector, 11 places have set up kuppe 12, by coordinating with the helical groove of arranging on piston 9, in bore bit bottom, forms negative pressuren zone, makes impactor form anti-periodic duty.The utility model is simple in structure, brill ichor is true, air-loss is little, has improved ballistic work, can not be subject to the impact of hole wall collapse, can sample constantly, has effectively improved drilling efficiency, reduces the pollution to environment.
The utility model is mainly used in sample drilling, Karst Cave Formation, cranny development stratum drilling construction and does not allow airborne dust bore operation place and replace former direct circulation creeping into impactor.
Claims (5)
1. a through reverse circulation impactor, comprise double-wall drill pipe joint (17), cylinder (1), distribution seat (3), non retern valve (4), spring (5), center rock sample pipe (7), outer tube (2), piston (9), fairlead (10), retaining ring (13), front connector (11) and bore bit (14), it is characterized in that: also comprise supporting seat (6), kuppe (12) and foreign material screen pack (15), inner side, upper end at cylinder (1) is provided with distribution seat (3) successively, non retern valve (4) and supporting seat (6), spring is positioned between non retern valve (4) and supporting seat (6) and is sleeved on supporting seat (6), supporting seat (6) is sleeved on center rock sample pipe (7), described foreign material screen pack (15) is located at the air distribution hole place on distribution seat (3), and fixing by the back-up ring (16) of being located in cylinder (1), the inner side, upper end of cylinder (1) is connected with the lower end of double-wall drill pipe joint (17), the lower end of cylinder (1) penetrates in the chamber of outer tube (2) and coordinates with outer tube (2), the periphery of cylinder (1) is provided with annular groove and forms air flue with together with annular groove on outer tube (2) inwall, lower end upper at cylinder (1) and outer tube (2) mating part is provided with the first air distribution hole (8) and second air distribution hole (24) of radially ventilation, upper end at described cylinder (1) mating part is also provided with oblique pore (22), described kuppe (12) is connected to front connector (11) above and forms negative pressuren zone (25) together with front connector (11) and bore bit (14), described outer tube (2) axial limiting is between kuppe (12) and the flange of cylinder (1) upper end.
2. a kind of through reverse circulation impactor according to claim 1, is characterized in that: the first air distribution hole (8), the second air distribution hole (24) and oblique pore (22) are more than 2, and uniform ringwise on cylinder (1).
3. a kind of through reverse circulation impactor according to claim 1, it is characterized in that: described piston (9) is provided with two groups of annular grooves with the periphery of cylinder (1) mating part, corresponding with the first air distribution hole (8) and the second air distribution hole (24) on cylinder (1), form air flue.
4. a kind of through reverse circulation impactor according to claim 1, is characterized in that: supporting seat (6) is sealed and matched by the second sealing ring (23) with center rock sample pipe (7); The upper end of described cylinder (1) and outer tube (2) are tightly connected by the first sealing ring (18); Between described distribution seat (3) and cylinder (1), be all sealed and matched between distribution seat (3) and center rock sample pipe (7).
5. a kind of through reverse circulation impactor according to claim 1, it is characterized in that: the inner side of described non retern valve (4), cylinder (1) and supporting seat (6) form the first air chamber (26), the outside of the lower end of described cylinder (1), piston (9) and outer tube (2) inner side form the second air chamber (21), and the upper end of described piston (9), fairlead (10) and outer tube (2) inner side form the 3rd air chamber (20); The upper end of described fairlead (10) inner side, piston (9) lower end and front connector (11) forms the 4th air chamber (21), and is communicated with described negative pressuren zone (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619462.2U CN203499555U (en) | 2013-10-09 | 2013-10-09 | Cut-through type reverse circulation impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619462.2U CN203499555U (en) | 2013-10-09 | 2013-10-09 | Cut-through type reverse circulation impactor |
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| Publication Number | Publication Date |
|---|---|
| CN203499555U true CN203499555U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320619462.2U Expired - Fee Related CN203499555U (en) | 2013-10-09 | 2013-10-09 | Cut-through type reverse circulation impactor |
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| Country | Link |
|---|---|
| CN (1) | CN203499555U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993847A (en) * | 2014-06-09 | 2014-08-20 | 中煤科工集团重庆研究院有限公司 | Double-channel multistage jet sampling tail braid |
| CN104033101A (en) * | 2014-05-22 | 2014-09-10 | 同济大学 | Major-diameter pneumatic downhole hammer with casing pipe drill |
| CN107620579A (en) * | 2017-08-31 | 2018-01-23 | 中国石油天然气股份有限公司 | Downhole workover tool for horizontal well |
-
2013
- 2013-10-09 CN CN201320619462.2U patent/CN203499555U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033101A (en) * | 2014-05-22 | 2014-09-10 | 同济大学 | Major-diameter pneumatic downhole hammer with casing pipe drill |
| CN104033101B (en) * | 2014-05-22 | 2016-04-06 | 同济大学 | A kind of large-diameter DTH air hammer with Sleeve drill |
| CN103993847A (en) * | 2014-06-09 | 2014-08-20 | 中煤科工集团重庆研究院有限公司 | Double-channel multistage jet sampling tail braid |
| CN103993847B (en) * | 2014-06-09 | 2016-06-08 | 中煤科工集团重庆研究院有限公司 | Double-channel multistage jet sampling tail braid |
| CN107620579A (en) * | 2017-08-31 | 2018-01-23 | 中国石油天然气股份有限公司 | Downhole workover tool for horizontal well |
| CN107620579B (en) * | 2017-08-31 | 2020-06-09 | 中国石油天然气股份有限公司 | Downhole workover tool for horizontal well |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20211009 |